There's a moment you reach in every Jenga game, when the weight of an entire tower balances precariously on a single middle block. A moment where everything can be ruined by a particularly violent cough. Residents of Dutch architecture firm MVDRV's new skyscraper in Vienna will live in perpetual fear of that moment. Read more >

When you're building supertalls, there are other problems to worry about than just making sure they don't fall down. One of the biggest is how to get people up to the top in a reasonable amount of time.

A further 197,000 workers will be housed in the windowless fulfilment centre two miles below the surface, where they will be born in darkness, fed enriched mulched cardboard through tubes and raised only to put things in boxes.